CVE-2018-20250 is a critical path traversal vulnerability in WinRAR versions prior to and including 5.61, specifically within the UNACEV2.dll when processing ACE archives. This flaw allows an attacker to craft a malicious filename that, upon extraction, writes files to arbitrary locations on the system, bypassing the intended destination folder. With a CVSS score of 7.8 (High), this vulnerability is easily exploitable via user interaction (e.g., opening a malicious archive) and can lead to complete compromise of confidentiality, integrity, and availability. It is actively exploited in the wild, including in ransomware campaigns, and has readily available exploit code in Metasploit and ExploitDB, garnering significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.61CPE matchmatch criteria | cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.